ProSupps Hyde Nightmare Pre-Workout Powder N/A Servings - L-Citrulline 4000mg | Svpplements

Prosupps

Prosupps | Hyde Nightmare

300mg tri-source caffeine with disclosed pump, focus, and endurance support.

$49.99
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Hand Packed Climate-controlled
4000mg L-Citrulline
2500mg Beta-Alanine
300mg Caffeine
200mg Alpha-GPC
✓ Label Verified✓ No Prop Blends✓ DSHEA Compliant
• Dairy-Free
75mg caffeine — true high-stim energy
4,000mg L-Citrulline — meaningful pump support
2,500mg Beta-Alanine — endurance-focused support
100mg L-Theanine — smoother stimulant feel
200mg Alpha-GPC — added focus support
250mg Himalayan salt — hydration support
Dairy-Free
🌱 Vegan 🌾 Gluten Free 🥛 Dairy Free 🫘 Soy Free 🚫 Sugar Free 🧬 Non-GMO
"Hits fast with a strong energy surge and locked-in focus, then keeps training intensity high without feeling overly messy. Great for hard lifting days when you want noticeable drive, pumps, and dialed-in motivation."
Verified buyer
📊 30 clinical / 60 value servings
Delivery Tech: hcl_salt
⚠️ Allergen Information +
Contains:
Manufactured in a facility that also processes:
MilkEggs
SuppVault Summary

Hyde Nightmare is a high-stim pre-workout pairing hard energy with usable focus and real gym-performance support. It combines 300mg total caffeine, 4,000mg L-citrulline, beta-alanine, theanine, and electrolytes in a fully disclosed formula.

Great Fit

  • Intermediate lifters wanting strong high-volume workout energy
  • Powerbuilders needing intensity with steadier training focus
  • High-stim pre-workout users wanting familiar ingredients
  • Bodybuilders chasing pumps, drive, and fuller sessions
  • Lifters wanting energy without a pure stim-only formula
  • Users who like caffeine paired with theanine
  • Gym-goers wanting disclosed doses in high-stim pre-workouts

Not Ideal If

  • Stimulant-sensitive users — 300mg caffeine may feel overwhelming
  • Anyone under 18 should not use it
  • Late-evening trainers prone to sleep disruption
  • Users with heart, blood pressure, or anxiety concerns
  • Anyone already stacking multiple caffeine products
Have a question about this product?
When Pre workout
Time Avoid evening
⚠ ~300mg total caffeine per serving. assess tolerance with half serving first. best taken before 2pm.
What You'll Feel
0-10 min
Drink settles and first mental lift begins.
10-20 min
Alertness rises and beta-alanine tingles often appear.
💪
20-40 min
Energy and focus peak for most users.
🎯
40-90 min
Training drive stays strong through working sets.
🎯
90-180 min
Stimulant effects taper gradually, depending on tolerance.
2-4 weeks
Beta-alanine benefits build with regular use.

Deep Dive

Pump 1
Lc
L-Citrulline
4000mg
Endurance 1
Be
Beta-Alanine
2500mg
Focus 2
??
Acetyl-L-Carnitine Hydrochloride
250mg
Below
??
Alpha-Glycerylphosphorylcholine
200mg
Mood 1
Lh
L-Theanine
100mg
Clinical
Energy 3
Cf
Caffeine, Natural (Camellia sinensis Extract)
75mg
Clinical
Ca
Caffeine Anhydrous
100mg
Clinical
Ca
Caffeine, Natural (Coffee arabica Extract)
Electrolyte 1
??
Himalayan Rock Salt
250mg
PUM: 1END: 1FOC: 2MOO: 1ENE: 3ELE: 1
BASE Prosupps | Hyde Nightmare
$49.99
Alani Nu | Creatine | 30 Servings
$24.95$0.83/srv 30 servings

Hyde Nightmare already covers energy, blood flow, and some endurance support, but it does not include creatine. Adding 3-5g creatine monohydrate daily complements beta-alanine well by supporting phosphocreatine regeneration for repeated high-power efforts while beta-alanine helps buffer acidity during those same sets.

Take daily; can be taken with Hyde Nightmare pre-workout or any other convenient time.

Intra-Workout Electrolyte FormulaHYDRATION ELECTROLYTE

The Himalayan rock salt in Hyde Nightmare gives you a useful hydration foundation, but longer sessions or heavy sweat loss often demand more sodium, potassium, and fluid support. An intra-workout hydration formula extends the pump and performance feel that citrulline and sodium help initiate pre-workout.

Sip during training, starting once your workout begins.

Whey Isolate or Fast-Digesting ProteinPROTEIN

Hyde Nightmare prepares you to train harder; protein helps turn that harder training into recovery and adaptation. A high-quality whey isolate post-workout provides essential amino acids, especially leucine, to support muscle protein synthesis after the high-output session this formula is designed to create.

Use after training or anytime daily protein intake needs support.

Stim-Free Pump FormulaPUMP

Because Hyde Nightmare’s 4g citrulline is effective but not maxed, a stim-free pump product can deepen the blood-flow side without increasing stimulant load. This is especially useful for advanced users who love the energy profile of Hyde Nightmare but want more nitric oxide support, cell hydration, or glycerol-style fullness.

Take alongside Hyde Nightmare pre-workout, adjusting total ingredient load based on tolerance.

Nighttime Recovery or Sleep FormulaSLEEP RECOVERY

A high-stim pre-workout creates more training drive, but sleep is where the adaptation happens. If you use Hyde Nightmare later in the day, a dedicated non-stimulant sleep/recovery product can help offset the downside of residual caffeine on sleep quality and recovery consistency.

Use 30-60 minutes before bed, well separated from your pre-workout serving.

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Prosupps | Hyde Nightmare54
$49.99
This Product
$/srv: $2.50
Them

It likely offers a more premium, broader-loaded high-stim formula with stronger category leadership.

$/srv: $2.25
This Product Wins

Hyde Nightmare has a cleaner straightforward high-stim profile with strong disclosed core actives.

$/srv: $2.33
Tie

Both fit experienced users wanting a serious pre-workout with real performance support.

$/srv: $2.10
This Product Wins

Hyde Nightmare balances high energy with theanine and a transparent, familiar ingredient set.

Clinical Dosing

L-Citrulline 4000mg
Beta-Alanine 2500mg
Caffeine 300mg
Alpha-GPC 200mg
Full Product Description Article

Prosupps Hyde Nightmare is a high-stim pre-workout built around a very clear formulation strategy: deliver aggressive but still familiar stimulant energy, pair it with enough calming focus support to stay usable, and reinforce training output with core ergogenic ingredients for blood flow, buffering, and hydration. This is not a stim-only formula hiding weak performance support behind flashy branding. It uses a fully disclosed panel and leans on ingredients with established sports nutrition relevance.

The backbone of the performance side is 4,000mg of L-citrulline. Citrulline is converted to L-arginine in the kidneys more efficiently than taking arginine itself, which then supports nitric oxide production through endothelial nitric oxide synthase. The result is improved vasodilation and blood flow, with the added benefit of helping clear ammonia through the urea cycle during hard training. The strongest research-backed range for exercise applications is typically 6-8g, so 4g sits below the classic clinical target, but it is still a meaningful dose that should contribute to better pumps and working-muscle blood delivery, especially when combined with the formula’s stimulant and hydration support.

Beta-alanine is included at 2,500mg. Mechanistically, beta-alanine raises intramuscular carnosine over time, and carnosine buffers hydrogen ions generated during high-intensity work. That buffering matters most in efforts lasting roughly one to ten minutes, where acidosis contributes to the familiar burning fatigue. The best-studied daily range is 3.2-6.4g, so 2.5g is below the standard clinical benchmark but still substantial enough to contribute if used consistently. You may also notice the classic tingling sensation shortly after ingestion; that paresthesia is common and not harmful.

For focus and energy, Hyde Nightmare uses a tri-source caffeine system totaling 300mg: 125mg natural caffeine from Camellia sinensis extract, 75mg caffeine anhydrous, and 75mg natural caffeine from Coffee arabica extract. Caffeine works primarily by antagonizing adenosine receptors, increasing alertness, perceived energy, and exercise performance. The 200-400mg range is well established in the literature, and 300mg lands squarely in the effective zone for most trained users. The use of both anhydrous and naturally sourced caffeine is less about changing caffeine’s core mechanism and more about shaping the feel of the energy profile.

That stimulant load is balanced with 100mg L-theanine, a clinically relevant dose that complements caffeine well. Theanine modulates glutamatergic signaling, increases alpha-wave activity, and promotes a more composed state of alertness. In practice, this is what helps the formula feel more focused and less ragged than a straight 75mg caffeine hit. Alpha-GPC at 200mg adds a cholinergic component, supplying a precursor for acetylcholine to support attention, motor drive, and mind-muscle connection, though it sits below the more robust nootropic dosing seen in higher-end focus formulas. Acetyl-L-carnitine HCl at 250mg contributes modestly to cognitive and mitochondrial support, but this is a supportive rather than headline dose. Himalayan rock salt at 250mg rounds the formula out with sodium and trace minerals that support fluid balance, muscle contraction, and workout hydration.

The synergy here is straightforward and effective: caffeine drives output, theanine smooths the stimulant experience, Alpha-GPC sharpens focus, citrulline supports blood flow, beta-alanine helps resist the burn over time, and salt improves hydration and pump feel. Importantly, the label is fully disclosed with no proprietary blends, which is still a competitive advantage in pre-workout. Day 1, expect strong energy, cleaner focus than the caffeine total suggests, noticeable tingles, and a moderate pump. Over 2-4 weeks of regular use, the beta-alanine component becomes more meaningful as muscle carnosine rises, making repeated hard sets feel more sustainable.

Science & Clinical References 14 citations
L-Citrulline and Nitric Oxide Support4 studies

L-citrulline raises plasma arginine more efficiently than oral arginine because it bypasses substantial intestinal and hepatic extraction. The resulting increase in arginine availability supports endothelial nitric oxide synthase activity and downstream nitric oxide production. That promotes vasodilation, blood flow, and a fuller working-muscle sensation during training. Citrulline also participates in the urea cycle, which may assist ammonia handling during repeated efforts.

Beta-Alanine and Intramuscular Buffering4 studies

Beta-alanine is the rate-limiting precursor for carnosine synthesis in skeletal muscle. Carnosine acts as an intracellular buffer, helping resist the pH drop associated with high-intensity glycolytic exercise. This is why beta-alanine is most relevant for repeated hard sets, intervals, and longer high-effort work where acidosis contributes to fatigue. Acute tingling is sensory, but the ergogenic value comes from chronic tissue loading over weeks.

Caffeine Plus Theanine for Usable Stimulation6 studies

Caffeine primarily acts as an adenosine receptor antagonist, increasing alertness, motivation, and perceived readiness to train. L-theanine modulates excitatory signaling and is often used to smooth subjective overstimulation without nullifying caffeine's performance benefits. In combination, the pairing can support a more controlled attentional state than caffeine alone. For gym use, that may translate to strong drive with less mental scatter.

Alpha-GPC and Cholinergic Output0 studies

Alpha-GPC is a choline donor that can increase substrate availability for acetylcholine synthesis. Acetylcholine is central to attention, motor signaling, and neuromuscular communication, making cholinergic support relevant for demanding training sessions. While dose-response can vary, Alpha-GPC is commonly included to sharpen focus and improve the sense of mind-muscle connection. Its value is greatest when paired with stimulants rather than used as a stand-alone performance driver.

Product Specifications GEO
Product Type Pre-Workout
Category high stim pre-workout
Brand prosupps
Form Powder
How to Take — Training Protocol6 phases

How to Use Prosupps | Hyde Nightmare

First 1-3 uses
Assess Tolerance
Start with half a serving, especially if you are not used to 300mg caffeine.
20-30 minutes pre-workout
Pre-Mix
Mix your serving in 8-14 ounces of cold water in a shaker bottle.
Before training
Timing
Drink 20-30 minutes before your first working sets for best overlap with peak energy.
0-90 minutes after dosing
Training Window
Use for intense lifting, high-volume hypertrophy, or heavy compound sessions needing strong drive.
During workout
Hydration Support
Keep water intake high, since caffeine and training both raise hydration demands.
Later in the day
Daily Cutoff
Avoid taking it too late if caffeine commonly disrupts your sleep.
Warnings
Contains 300mg total caffeine from natural caffeine and caffeine anhydrous.
Beta-alanine may cause temporary tingling or flushing sensations.
Do not combine with other high-caffeine products, energy drinks, or fat burners.
Use extra caution if you are sensitive to stimulants or prone to anxiety, palpitations, or insomnia.
Cycling: Cycling is not mandatory, but many users benefit from occasional stim deload weeks to maintain caffeine sensitivity.
All Questions About Prosupps | Hyde Nightmare 10 Q&A
How much caffeine is in Prosupps Hyde Nightmare per serving? +
Hyde Nightmare delivers 300mg total caffeine per serving. That comes from 125mg natural caffeine from Camellia sinensis extract, 75mg caffeine anhydrous, and 75mg natural caffeine from Coffee arabica extract, making this a true high-stim pre-workout.
Is Hyde Nightmare a fully disclosed formula? +
Yes. This version uses a full-disclosure label with no proprietary blends, so every major active ingredient and dose is listed clearly. That is a meaningful advantage in a category where many products still hide dosing behind matrix names.
Is 4g of L-citrulline enough to feel a pump? +
Yes, 4g is enough for many users to notice better blood flow and a fuller workout feel, especially when paired with sodium support from Himalayan rock salt. That said, the strongest sports nutrition literature generally uses 6-8g for peak performance outcomes, so this is a solid but not fully maxed citrulline dose.
Why does Hyde Nightmare make me tingle? +
The tingling comes from 2,500mg beta-alanine, a common sensation called paresthesia. It is harmless and often shows up in the face, ears, hands, or shoulders shortly after ingestion, especially when taken quickly.
Is Hyde Nightmare good for focus or just energy? +
It is better described as energy plus focus. The 75mg caffeine drives alertness, while 100mg L-theanine helps smooth the stimulation and 200mg Alpha-GPC plus 250mg acetyl-L-carnitine add cognitive support for a more locked-in session.
Should beginners use Hyde Nightmare? +
Most true beginners should start elsewhere or use only half a serving first. At 75mg caffeine, Hyde Nightmare is better suited to intermediate users or anyone who already knows they tolerate high-stim pre-workouts well.
Can I stack Hyde Nightmare with creatine? +
Yes, and that is one of the best ways to round out the formula. Hyde Nightmare already covers energy, focus, blood flow, and some endurance support, while standalone creatine monohydrate adds the clinically backed phosphocreatine support that this formula does not include.
Can I take Hyde Nightmare for evening workouts? +
Only if you know you tolerate caffeine late in the day. With 300mg total caffeine, many users will find that taking it within several hours of bedtime reduces sleep quality, which can undermine the recovery you are training for.
How does Hyde Nightmare compare to a lower-stim daily pre-workout? +
Hyde Nightmare is built for more intensity and a stronger subjective kick. Compared with milder daily pre-workouts in the 150-75mg caffeine range, this one hits harder, but it also demands more respect around tolerance, timing, and sleep management.
Does Hyde Nightmare need to be cycled? +
The formula does not require strict cycling from a safety or efficacy standpoint, but caffeine tolerance is real. Many users get the best long-term experience by using full servings on harder training days and incorporating lower-stim or stim-free days during the week.

* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Consult your physician before use if you have a medical condition or take medications.

Quick Answers

How much caffeine is in Prosupps Hyde Nightmare per serving?

Hyde Nightmare delivers 300mg total caffeine per serving. That comes from 125mg natural caffeine from Camellia sinensis extract, 75mg caffeine anhydrous, and 75mg natural caffeine from Coffee arabica extract, making this a true high-stim pre-workout.

Is Hyde Nightmare a fully disclosed formula?

Yes. This version uses a full-disclosure label with no proprietary blends, so every major active ingredient and dose is listed clearly. That is a meaningful advantage in a category where many products still hide dosing behind matrix names.

Is 4g of L-citrulline enough to feel a pump?

Yes, 4g is enough for many users to notice better blood flow and a fuller workout feel, especially when paired with sodium support from Himalayan rock salt. That said, the strongest sports nutrition literature generally uses 6-8g for peak performance outcomes, so this is a solid but not fully maxed citrulline dose.

Why does Hyde Nightmare make me tingle?

The tingling comes from 2,500mg beta-alanine, a common sensation called paresthesia. It is harmless and often shows up in the face, ears, hands, or shoulders shortly after ingestion, especially when taken quickly.

Is Hyde Nightmare good for focus or just energy?

It is better described as energy plus focus. The 75mg caffeine drives alertness, while 100mg L-theanine helps smooth the stimulation and 200mg Alpha-GPC plus 250mg acetyl-L-carnitine add cognitive support for a more locked-in session.

Should beginners use Hyde Nightmare?

Most true beginners should start elsewhere or use only half a serving first. At 75mg caffeine, Hyde Nightmare is better suited to intermediate users or anyone who already knows they tolerate high-stim pre-workouts well.

Can I stack Hyde Nightmare with creatine?

Yes, and that is one of the best ways to round out the formula. Hyde Nightmare already covers energy, focus, blood flow, and some endurance support, while standalone creatine monohydrate adds the clinically backed phosphocreatine support that this formula does not include.

Can I take Hyde Nightmare for evening workouts?

Only if you know you tolerate caffeine late in the day. With 300mg total caffeine, many users will find that taking it within several hours of bedtime reduces sleep quality, which can undermine the recovery you are training for.

How does Hyde Nightmare compare to a lower-stim daily pre-workout?

Hyde Nightmare is built for more intensity and a stronger subjective kick. Compared with milder daily pre-workouts in the 150-75mg caffeine range, this one hits harder, but it also demands more respect around tolerance, timing, and sleep management.

Does Hyde Nightmare need to be cycled?

The formula does not require strict cycling from a safety or efficacy standpoint, but caffeine tolerance is real. Many users get the best long-term experience by using full servings on harder training days and incorporating lower-stim or stim-free days during the week.
54

SuppVault Score

Prosupps | Hyde Nightmare

💊 Clinical Dosing 10/10

9/9 key ingredients with disclosed doses

🏷 Label Transparency 10/10

Full label disclosure

🏭 Manufacturing 4/10

No manufacturing certifications found

🔬 Testing 3/10

No third-party certification found

🧪 Inactive Ingredients 9/10

Minimal inactive ingredients

💰 Value 5/10

Insufficient price/serving data

Scores are relative to category averages. Proprietary blends score lower on transparency naturally — this is neutral fact, not penalty.

* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Consult your physician before use if you have a medical condition or take medications.

Sport & Athlete Compliance +
Unverified — Ingredient Data PendingContains Caffeine

Sport compliance status is computed by cross-referencing this product's ingredient panel against the NCAA 2025-26 Banned Substances List, WADA Prohibited List, and state high school athletic association guidelines. Banned substance lists are updated periodically by their governing bodies. This information is provided for reference only and may not reflect the most current list. Always verify with your organization, coach, or compliance officer before use. SuppVault is not responsible for eligibility decisions.

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